Chemokine receptor expression on progenitors does not correlate with LC generation potential. (A) RT-PCR analysis of CCR2 and CCR6 expression in purified progenitor populations and epidermal LCs. Actb primers acted as controls. Data are based on 2 experiments with similar results. (B) Histogram plots show CCR2 and CCR6 (bold lines) surface expression of progenitor populations. Dashed lines represent isotype control stainings. Data are representative of 2 experiments with similar results.